<template>
    <div class="app-container">
      <el-form label-width="120px">
        <el-form-item label="信息描述">
          <el-tag type="info">excel模版说明</el-tag>
          <el-tag>
            <i class="el-icon-download"/>
            <!-- <a :href="OSS_PATH + '/excel/%E8%AF%BE%E7%A8%8B%E5%88%86%E7%B1%BB%E5%88%97%E8%A1%A8%E6%A8%A1%E6%9D%BF.xls'">点击下载模版</a> -->
            <a :href="'https://edu-115412.oss-cn-chengdu.aliyuncs.com/2022/09/22/f380622b62834a7a88e4798f8e42dbb001.xlsx'">点击下载模版</a>
        </el-tag>
        </el-form-item>
        <el-form-item label="选择Excel">
          <el-upload
            ref="upload" 
            :auto-upload="false"
            :on-success="fileUploadSuccess"  
            :on-error="fileUploadError"
            :disabled="importBtnDisabled"
            :limit="1"
            :action="BASE_API+'/eduservice/edu-subject/addSubject'"
            name="file"
            accept=".xls, .xlsx">
            <el-button slot="trigger" size="small" type="primary">选取文件</el-button>
            <el-button
              :loading="loading"
              style="margin-left: 10px;"
              size="small"
              type="success"
              @click="submitUpload">{{ fileUploadBtnText }}</el-button>
          </el-upload>
        </el-form-item>
      </el-form>
    </div>
</template>
<script>
export default {
    data(){
        return{
            //<!-- accept="application/vnd.ms-excel"> -->
            BASE_API: process.env.VUE_APP_BASE_API, // 接口API地址
            // OSS_PATH: process.env.OSS_PATH, // 阿里云OSS地址
            fileUploadBtnText: '上传到服务器', // 按钮文字
            importBtnDisabled: false, // 按钮是否禁用,
            loading: false
        }
    },
    created(){

    },
    methods:{
        // 点击按钮上传文件到我们的接口里面
        submitUpload(){
            this.fileUploadBtnText = '正在上传'
            this.importBtnDisabled = true
            this.loading = true
            // js: document.getElementById("upload").submit()
            // 这个就是提交的要
            this.$refs.upload.submit()
        },
        // 上传成功之后
        fileUploadSuccess(){
            this.loading = false
            this.$message({
                type: 'success',
                message: '添加课程分类成功'
            })
            // 跳转到分类列表
            // 就是路由跳转   /subject/list 就是网页上看到的路劲
            this.$router.push({path:'/subject/list'})
        },
        // 上传失败之后
        fileUploadError(){
            this.loading = false
            this.$message({
                type: 'error',
                message: '添加课程分类失败'
            })

        },
    }
}
</script>